<template>
    <li>
        <label>
            <input type="checkbox" :checked="todo.done" @change="handleCheck(todo.id)"/>
            <span>{{todo.title}}</span>
        </label>
        <button class="btn btn-danger" @click="handleTodo(todo.id)">删除</button>
    </li>
</template>

<script>
  import pubsub from 'pubsub-js'
  export default {
      name:'MyItem',
      // 声明接收todo对象
      props:['todo'],
      methods:{
        // 勾选or取消勾选
        handleCheck(id){
          // 通知App组件将相应的todo对象的done值取反
          this.$bus.$emit('checkTodo',id)
        },
        handleTodo(id){
          if(confirm('确定删除吗？')){
            // 通知App删除对应的todo
            // this.delTodo(id)
            // this.$bus.$emit('delTodo',id)
            pubsub.publish('delTodo',id)
          }
        }
      },
  }
</script>

<style scoped>
  /*item*/
  li {
    list-style: none;
    height: 36px;
    line-height: 36px;
    padding: 0 5px;
    border-bottom: 1px solid #ddd;
  }
  li label {
    float: left;
    cursor: pointer;
  }
  li label li input {
    vertical-align: middle;
    margin-right: 6px;
    position: relative;
    top: -1px;
  }
  li button {
    float: right;
    display: none;
    margin-top: 3px;
  }
  li:before {
    content: initial;
  }
  li:last-child {
    border-bottom: none;
  }

  li:hover{
    background-color: #ddd;
  }
  li:hover button{
    display: block;
  }
</style>